scrollY property
@DocsEditable(), @DomName('Window.scrollY')
The distance this window has been scrolled vertically.
Other resources
The Screen interface specification from W3C. scrollY from MDN.
Implementation
@DomName('Window.scrollY')
@DocsEditable()
int get scrollY => JS('bool', '("scrollY" in #)', this)
? JS('num', '#.scrollY', this).round()
: document.documentElement.scrollTop;